gospelunder

Hi, thank you!! And sure, it’s a pretty simple process. 

The eyes are made up of a bunch of 3D parts, all separate. This is to make stuff later down the line easier, and just generally looks cleaner than having them painted onto the face as a texture.

The “white” of the eye is concave, so there’s room for the pupils/highlight to float in there. This means they can be moved around easily if you wanted to animate them via bones! But I don’t do that! I use ~Morph targets~

Morph targets (or Blendshapes in Blender) are edited versions of the original model, their vertices moved around to make different expressions. This is why I try to keep things separate, to isolate the different bits of the model and move them individually. They can be troublesome, because to make a useable morph target, you aren’t allowed to add or remove any vertices. Only move them!

After a lot of duplicating and editing, you’ll have a nice little collection like this:

Then you can attach them to the original face via the “Morpher” modifier. I have no idea what the equivalent in Blender is. This part is simple, you just assign each expression to a slot, and woo! You can blend between your original face and the new expression.